Window cleaning device



July 28, 1931'. L. HAcHENBl-:RG

l WINDOW CLEANING DEVICE Filed March 19. 1929 INVENToR maf 2% A 'TORNEYS Patented July 28, 1931 UNITED STATES PATENT LOUIS HACHENBERG,

WINDOW `cLaariivef DEVICE Application ined March 19, 19,29.y seriai No. 348,251.V

This invention relates to animprovement' in window cleaning devices, and more vparticularly to a cleaning element which con- 1 tacts'with the window glass and is moved 5 forward and backwardv to remove rain, sleet or snow from the surface thereof.

It has for its object to provide a device which is simple in construction, economical in the manufacture and efficient in operation.

Another object is to provide a rdevice having a resilient wiper composed of a longitudinal fiat ,strip having one edge divided into three longitudinal contact surfaces spaced apart, two of'which surfaces alter- 15 nately coact to form a squeegee to remove a heavy collected matter formed yon the window glass and the other surface serving as a following wiper.

I Another object is to provide a device havzoring a resilient wiper composed of a longitudinal flat strip developed into a tubular portion and two fiat Istrips,radiating*v from' the flat portion on opposite sides of the tubular portion, whereby the tubular portion acts as a squeegee to remove light collected matter from the window glass and the radiating strips wipers. f

Another object is to provide certain improvements in the form, construction and arrangement of the parts whereby the above named and other objects may be effectively attained.

A practical embodiment of my inventionV is represented in the accompanying drawings in which,

Fig. 1 represents a detail side elevation of my improved device, partly in section, applied to a portion of a window, also in section.

Fig. 2 represents a front elevation of the same. f

Fig. 3 represents ak horizontal section taken in the plane of the line III-III of Fig. 1 looking in the direction of the arrows.

Fig. 4 represents a similar view with the parts in the position they assume when being moved in the direction indicated by the arrow.

function as additional 'Fig.l 5 represents a similar view with the parts inanother position, and

'Fig 6 represents a similar view iied form of resilient wiper.

The lremovable arm lof the device is" de- Y noted-by 1, and is moved'forward andba'ck` ward in the plane parallel to the window glass 2,' by any well known or approved mechanism. Y

tudinal recess 3` therein which is arranged The Vfree end of the arm has4 a longiof a modto receive and-hold one endy of an inter-` y mediate member 4 by means of a bolt 5 and nut 6, which bolt acts asa pivot on which the member 4 oscillates. The ylower end of the'member 4 is arranged to'receive a carrier 7 having a longitudinal channel 8. This carrier 7 is secured to the member 4 by means of abolt 9 and nuftlO, and is' arranged to rock thereon. l

The wiper of resilient material, such' as rubber or.' other similar material whichis n impervious-to moisturecomprises a -longil tudinal flat strip v11 having one of its edges developed into a tubular portion 12 and two relatively thin-fiat strips 13, 14, which normally -radiategonopposite sides of the' tubularfporti0n-12- The strip 11 is secured in the longitudinal channel 8 of the carrier 7,

so that the radiating strips 13, 14 will normally rest uponthe windowf glass 2,' as shown yin Fig. 3. The carrier 7 is free to rock on its pivot pensate for any inequalityfor irregularityv in the window glass.v Y 11n order to bring the wiper into close contact with thewindow glass, I provide the arm 1 witha'projection 15 having a v9, so thatv the resilient wiper 'will substantially conform to the angleof thewindow glass as well as comi recess 16 arranged to house a coil spring 17,

onev end of which rests on the vbaclrof the intermediate member 4 while the other end abuts a washer 18' carried by a thumb screw 19, which has a screw threaded engagement with the projection 15 on the'arm 1. -A coil spring 2OV is interposed between the head 21 ofthe thumb screw 19 and the projection 15 on the arm to prevent unintentional movement of thethumb screw. Y By adjusting the thumb screw 19 in the projection 15, the longitudinal member 4 will be moved on its pivot bolt 5 by the tension of the spring 17, which movement will cause the carrier 7 to be moved toward or away from the. window glass through its pivot bolt 9 and thereby increase or diminish the pressure of the resilient wiper on the window glass.

The device may be adjusted so that the strips 13, 14 will lightly press upon the glass and wipe any fine rain or mist from the Window glass, as shown in Fig. 3, while further adjustment may be made so that the longitudinal strips 13, 14 will be brought alternately into coaction with the tubular portion 12 so as to clean the window of heavy rain, snow or sleet, which position is Shown in Figs. 4 and 5.

In Figs. 4 and 5 it will be seen that as the wiper is moved in the direction of the arrows the longitudinal strip in advance of the tubular portion 12 will wrap itself partly around the tubular portion and serve to push the rain or snow ahead of it while the companion longitudinal strip, which follows, will clean any moisture from the Window glass that may not have been removed by the coacting tubular portionA and longitudinal strip.

Thus by reason of the flexing and rolling` movement of the two longitudinal strips around the tubular portion 12 the wiper will be maintained in apliable condition and thereby eiiiciently perform the desired re-V sult.

It is also to he pointed out that by the construction and operation of the resilient wiper, the arm 1 and its adjacent mechanism may be moved forward and backward with a minimum amount ofpower.

In Fig. 6 I have showna modiiied form of resilient wiper having a longitudinal tubib lar portion 22 formed integral with a fiat strip23, while upon opposite sides of which strip and tubular portion are disposed rela.- tively thin longitudinal strips 24, 25, the outer edges of which are also inclined outwardly in opposite directions. In this form it will be seen that the longitudinal stripsi 24, 25 may bel readily replaced if worn or destroyed.

v Itis obvious that various changes may be resorted to in the form, construction and ar-- rangement of the several parts without departing from the spirit and scope of m-y invention; and hence, Ido not intend-v to be limited to the details herein shown and described, except as they may be included in the claims.

lVhat I claim is:

1. A window cleaning device comprising, a movable carrier, a resilient wiper secured therein, said wiper including two longitudinally disposed flexible members projecting beyond said carrier and a flexible tubular member interposed between said first named members, the free edges of the members being normally spaced apart, and means for bringing' at least two or the members into contact with the window glass.

2. A window cleaning device comprising, a movable carrier, a resilient wiper secured therein, said wiper including` two longitudinally disposed flexible members projecting beyond -sai-d carrier and a flexible tubular member interposed between said iirst named members, the free edges of the members being normally spaced apart, and means for bringing at least two of the members into contact with the window glass, said means being adjustable vfor regulating the frictional contact of the members with the glass.

3. A window cleaning device comprising, a movable carrier, a resilient wiper secured therein, said wiper including` a lrmgitudinal strip having one of its edges formed with two longitudinally disposed flat strip members spaced apart at their free edges and having a flexible tubular member interposed between said free edges, and means for bringing at least two of said members into contact with the window glass.

4. A wiper for window cleaners comprising, a carrier, two longitudinally disposed flexible flat strips secured in and projecting from said carrier with their outer edges spaced apart and a flexible tubular member interposed between the spaced outer edges of -the strips.

Intestimony, thatl claim the foregoing as my invention, I have signed my name this yth day of March, 1929.

- LOUIS HACI-IENBERG. 

